-8w+7=-9w

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Solution for -8w+7=-9w equation: 



-8w+7=-9w

We move all terms to the left:

-8w+7-(-9w)=0

We get rid of parentheses

-8w+9w+7=0

We add all the numbers together, and all the variables

w+7=0

We move all terms containing w to the left, all other terms to the right

w=-7

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